Building-block



No. 749,020. PATBNTED JAN. 5, 1904.

0. H. BOLEN. BUILDING BLOCK.

APPLICATION FILED MAY 22, 1903.

N0 MODEL.

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ATTORNEYJ m: mums PETER! cor, Puo'raumu. WASHINGTON n1;

UNITED STATES.

i PATENT Patented January 5. i904.

OFFICE.

BUILDING-BLOCK.

SPECIFICATION forming part of Letters Patent No. 749,020, dated January5, 1904.

Application filed May 22, 1903. Serial No. 158,369. (No model.)

To all whom it may concern:

Be it known that I, ORVILLE H. BOLEN, a citizen of the United States,residing at Denver, in the county of Denver and State of Colorado, haveinvented certain new and useful Improvements in Building-Blocks; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in building-blocks, andparticularly to such as are provided with effectual bonding means; andthe object in view is the provision of a block which is designed tointerlock with a similar block in such manner as to leave bonding-spacetherebetween for receiving cement or other sealing material.

With this and further objects in view the invention consists of abuilding-block formed with cyma surfaces the curves of which aredesigned to lie in planes out of parallel with the corresponding curvesof interlocking blocks for providing curved bonding-material-receivingspaces therebetween.

It further consists of certain other novel constructions, combinations,and arrangements of parts, as will be hereinafter more fully describedand claimed.

In the accompanying drawings, Figure 1 represents a perspective view ofa buildingblock embodying the features of the present invention. Fig. 2represents a View in side elevation of the same. Fig. 3 represents afragmentary perspective view portion of wall made up of building-blockssimilar to that disclosed in Figs. 1 and 2.

In the presentartit is quite common to form building-blocks withcorresponding parallel contiguous faces, whereby in positioning theblocks for producing a Wall the cement employed has no spaces in whichto lie for causing the blocks to cling together, and in order toefiectually bond the blocks of a wall I employ bricks or blocks of thepeculiar con figuration illustrated in the accompanying drawings, inwhich 1 refers to a body portion of a block having a flat straightlongitudinal edge 2 and flat straight ends 3 3. The upper and lowerfaces of block 1 are flat, but the edge opposite 2 is cut away andformed with curved half the length of the flat portion 6, leaving astraight flat section 7 at each end of block 1. The concaved portion 4isa greater curve than v.thecurv-e of the convexed portion 5, whereby whenthe blocks are assembled, as indicated in Fig. 3, a space will be leftbetween the curved edges thereof.

In assembling the blocks 1 in the form of a wall the same are arrangedas illustrated in Fig. 3, with the parts 7 of one block lying in contactwith the fiat portions 6 of an oppositely-arranged block, the flatportion 7 of the next longitudinally-arranged block to thefirstmentioned block also contacting with the flat portion 6 of thesecond-mentioned block, so that a perfect interlocking of the blocks isproduced throughout the entire length of the wall. However, the cymasurface upon each end of each block produced by the concaved portion 4and the convexed portion 5 have a contour not designed to fit snuglywith the corresponding face of the contiguous block when the variousblocks are assembled, but falling short of such contact by a distancesufficient for leaving a space having a compound curve, as at 8, for thereception of bonding material. Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1 A building-block comprising a body portion having one edge formed withoutwardlyflaring cyma surfaces.

2. A building-block comprising a body portion having one edge formedwith outwardlyflaring cyma surfaces, the curves of each surface being ofsuch degree relative to each other as to leave a space between the sameand the corresponding registering curves of a contiguous similar block.

3. A building-block comprising a body portion having one edge cut awayand formed centrally with a flat, straight portion and. curved in eachdirection away from the flat portion toward the ends of the body portiontion having one of its edges formed with cyma surfaces flaring outwardlyfrom points near the center thereof.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

ORVILLE H. BOLEN.

Witnesses:

T. G. FELLOWS, GEORGE S. CLASON.

